2. Experimental
2.1. Materials
Doubly distilled and deionized water, (Destamat Bi18E)was used. p-(1,1,3,3-tetramethylbutyl)-phenoxypolyoxyethyleneglycol, Triton X-100 (TX-100) (Fluka), was used without fur-ther purification and cetyltrimethylammonium bromide (CTAB)(Sigma–Aldrich) was purified by the method described in the lit-erature [13] (Table 1). The solubility of CTAB in water at 293 K isequal to 3 g/dm3(≈0.008 M). Ethanol (99% purity) was obtainedfrom Sigma–Aldrich and purified by fractional distillation in thepresence of magnesium and iodine as an activator [14] and keptover molecular sieves.